Even though it may seem weird but for them this was not important.
As for creating some spells it's not like that he has heaven defying understanding. But because if he had a little idea about creating a spell and think about it's core idea then he could release that spell.
But that is limited for only lighting his talent. That's why now he thinks that magic talent is important. Because if we had a core idea then we could create a spell.
Don't think it is easy. It is easy for Liam because he had watched this magic spells on Earth.
We not only need a core idea but also need to simulate it inside our mind that's why many people's in this world think that creating a spell is difficult.
But for Liam who is time traveller it is pretty easy.
Creating spells also has many limitations like mana, life force, idea whether it is right or wrong etc.
For creating a spell if we had core idea and simulate it inside our mind is easy.
